Process and apparatus for burning off glassware



A. C. PARKER PROCESS AND APPARATUS FOR BURNING-OFF GLASSWARE 4, 1924 5 Sheets-Sheet 1 Filed Feb.

March 23 W26.

March 23 19260 L57754 A. C. PARKER PROCESS AND APPARATUS FOR BURNING-OFF GLASSWARE Filed Feb. 4. 1924 3 sheets-sheet 2 58 l sa A lm c RNW.

@5131 www, M/1.044 faQ/M March 23 l926 A. C. PARKER PROCESS AND APPARATUS FOR BURNING-OFF GLASSWARE Filed Feb.

4c, 1924 5 Sheets-Sheet :3

s@ @MAI cmn Patented -Mar. 23, 1926.

,PATENT OFFICE.

ALVAH C. PARKER, OF TOLEDO, OHIO, ASSIGNOR TO THE LIBBEY GLASS MANFAC- TURING COMPANY, OF TOLEDO, OHIO, A CORPORATION 011:' OHIO.

PROCESSfAND APPARATUS .FOR BURNING OFE GLASSWARE.

Applicationvled February 4, 1924. Serial lNo. 690,409.

To all whom z't may concern.'

Be it known that I, ALvAH C. PARKER, a.` citizen of the United States, and a resident of Toledo, in the county of Lucas and State of Ohio, have invented a new and useful Process and Apparatus for Burning Oil' lio Glassware, which invention is fully set forth in the following specification. l y

My invention relates to burning 0E glassware. The object of the invention is to burn olf glassware in such a manner that a iinished edge will be produced, and the mannery in which the object is achieved will appear as the description proceeds. In the accompanying drawings forming a part of this specification,

Figure 1 is a section of one of the units of the apparatus I have devised. taken substantially along the line 1+1 onFig. 3. Figs. 2, 3, 4 and 5 are partial sections taken along lines 2-2, 3 3, 4-4 and 5,-5,respectively, on Fig. 1.

I provide a bench plate 10, which may be long enough to" support as many units as desired. As these units are duplicates of each other, but one unit is described in detail. The bench plate is sliown supported by legs 11. A main shaft 12 drives all of the units and `is supported from the bench plate by brackets 13, one of which is shown in Figs. 2. 3 Aand 4. The main shaft carriesa cam wheel for each unit, two of'these cam wheels being shown in Fig 3, Wheel 14 actuating the unit which is described, and wheel 14a being adapted to operate a similar unit.

The bench plate is provided with a slot 15, above which'V a slide block 16 may reciprocate. The slide block 16 carries a slide plate 17, resting upon the bench. plate and extendying beyond .the sides of the slot -beneath guide plates 18, which may be fastened to the bench plate bybolts 19. A bracket 20 depending from the bench plate' carries a fulcrum pin 21 for a lever, of which one army 22 extends downward and carries a cam roller 23, adapted to contact the cam face 24 of the wheel 14. This cam face. is concentric throughout most of its length, but has a projection 25, which Will-give the lever reciprocatory movement. The other ar1n26 of the lever is connected by an adjustable link 27 to a lug 28 extending downward from the slide plate 17. A cord 29 is connected toa' pin 30 fastened on the lug 28. 4The cord 29 passes over a pulley 31 and'has aweight 32 hung thereon, and this cord and weight tend to hold the slide block` 16 to the left as viewed in Fig. 1 and return it to its extreme left position after itis forced to the right .by the cam projection 25.

A suction pipe 33,carrying `a suction plate 34, is mounted in a horizontal bore-in the block 16 and is prevented from longitudinal movement with respect to the block by a split collar 35 which enters an annular groove 36 about the suction pipe. A valve casing 37 is attached to the block 16 in line with the pipe 33. A pipe 38 connects the valve casingr withl any suitable means for exhausting air. The connection between the valve chamber and the channel 39 through the suction pipe 33 is controlled by a valve 40. A spring 41, between the casing and a collar 42 on the end of the valve stem, normally thrusts the valve towards its seat. The

valve is unseated by a lever 43, which is pivoted at 44 to the valve casing. A bracket 45-is attached to the bench plate and has al set screw 46 in position to contact the end 47 of the lever 43.

A bearing block 50 has a bearing 51,' in which there is journalled a sleeve 52. The sleeve 52 carries at one end a sprocket Wheel 53 and at the other/end achuck head 54. A screw 55ppasses through the sleeve into a groove 56 in the suction pipev 33V and prevents relative rotation of the sleeve and pipe i l while permitting relative longitudinal movement.

A burner support 57 is mounted upon the bench plate. As shown, it is semi-annular in form and adapted to have slipped into it from above, an annular burner 58, which maybe similar to that disclosed in the patent for gas burnerv granted to Ernest C. Schrader, December 4, 1923, No. 1,476,184. Any other ysuitable annular burner may be used. A supplypipe 59 leads a supply for the burner into cavity 60 of a ,valve casing 61. From the cavity 60, the supply passes through outlet 62 and through connecting pipe 63 to the annular burner. A burner 64. is so positioned -that it will play a flame 65 over the chuck 54 and over a portion ofan article in the chuck, and is fed by fuel from any suitable source.

The outlet 62 is controlled by a valve' l the valve.- The block 68 carries a cam' wheel 69 in position to be operated by Aa cam 70. A spring 71 contacts at one end a stufiing box 72 about the stem of the,

valve, and at the other end contacts the block 68 and forces the wheel into contact with the cam.

The cam 70 is constructed of two sections, 7 3 and 74. These sectionsare united by bolts 7 passing through slots 76, so that the position of the sections may be adjusted to open and)y close the valve at the desired points yduring the rotation of ther shaft. The section 73 is fastened on the shaft by me\ans of a set screw 77 entering a groove 78 in the shaft.

Above another slot 80 in the bench plate, there is a slide block 81, which is supported by a slide plate 82 resting upon the bench plate at the sides of the slot and 5 The rock shaft 86 'carries a rock arm 87 bearing a cam wheel 88 operating in a ycam groove 89 within the l"cam wheel 14. The rock shaft has upwardly extending rock arms 90 and 91, which are connected by links 92 and 93 to a pivot pin 94. The

o bench plate, and is adjustably held on the pivot pin 94 passes through lugs 95 extending downward from the slide 82.

The slide block 81 is provided with a bearing 96,' in which lis journalled a sleeve 97 carrying a chuck head 98. The other end of the sleeve 97 is journalled within a bearing 99 carried by a block 100. The block 100 has a downwardly extending lug 101 entering a groove 102 in the bench plate by bolts 103.

A rod 104 p asses through the sleeve 97 and carries a pin 105 extending outward into slots 106 in the sleeve 97. This connection prevents relative rotation of the rod and sleeve while permitting relative longitudinal movement of the parts. The chuck jaws 107 are pivoted at 108 to the chuck head 98. Rearward 'extensions 109 of the chuck jaws are connected by links 110 to a pin 111, mounted in the end of rod 104. The other end of the rod carries a collar 112, fastened to the rod by apin 113. A bracket 114, fastened to thebench plate, carries a set screw 115l in laxialalignment with the rod. Relative longi- .tudinal movement of the rod and sleeve is yieldingly resisted by friction blocks 116. Stop blocks 117 are fastened in thel outer ends of bores 118 through the chuck head 98, and springs 119, between blocks 116 and 117, constantly press the friction blocks 116 into contact with` the rod 104.

A counter shaft 120 is mounted in a bearing 121 in the bracket 20, and in a bearing 122 in a bracket 123, extending downward from the bench plate. The shaft 120 passes through a bearing 124 in theY bracket 85. The main shaft 12 carries a spiral gear 125 in mesh with a spiral gear 126 on the shaftr120. A sprocket wheel 127, on the end of 'the shaft 120 next to the bearing 121, actuates a sprocket chain 128, passing over sprocket wheel 53, thereby rotating the suction chuck. A sprocket wheel 129 is slidableupon the shaft 120,

sleeve.' A- sprocket chain 134, connects` sprocket wheels 129 and 131, and forces the mechanical chuck to rotate 1n unison with the suction chuck.

The operation of the device is 'as follows:

The parts being in the position shown in Fig. 1. an article. such as a blown tumbler 135, is supported with its bottom in the suction chuck and with the moil 136 within the mechanical chuck. and with the line of division 137 in position to be played upon by iames from the burner 58. At

this time thefvalve 66 will be raised, as

shown i-n Fig. 3, allowing passage from pipe 59 through the valve and through pipe 63 to burner 58.

I prefer to operate this burner vwith a constant supply of fuel gas through pipe 38 and an intermittent supply of oxygen through the pipe 59. A sufciently intense flame is produced to melt the glass along the lineof division 137, and thereafter the block 81 moves to' the rightv as viewed in Fig. 1, because of the shape of cam groove 89 in the 4cam wheel'14. This movement of theblock carries with it the sleeve 97 and the chuck head 98. and the moil within the chuck is carried to the right until the rod 104 contacts the sert screw 115.;

whereupon the continued movement of the v sleeve will open the jaws 107 and drop the moil. I

About the time the severance is completed and the chuck is moved to the right with the moil, valve 66 is closed so as to shut olf the supply of oxygen. This reduces the intensity of the ame so that there will not be excessive melting of the glass at the edge of the tumbler, but the continued heat from the burner, produced by the burning of the fuel from pipe 138 in the openair, will smoothv the edge-,and remove any irregularities produced by the drawing away of the moil. When the edge has been sufficiently fire-finished, the cam projection 25 causes the movement of block 16 to the right. This allows valve'40 to close and at thesame tiine forcessuction plate 34 to the right, and thereby ejects the burnt-off tumbler from the chuck.

A new tumbler is then placed in the suction chuck and the cam groove 89 returns the\ mechanical chuck to the left. When the collar 112 contacts the bearing 99, rod 104 is stopped and the continued movement of sleeve 97 to the left closes the jaws 10T about the moil. These jaws 107 are provided with pads 140, which are of some heat-insulating material so that 'the glass will not be unduly chilled, as it is preferable to have -the articles quite hot before placing them in the chuck. lVliile these pads may be so arranged as to contact'the glass, I prefer to soproportion the parts that there will be a very slight clearance -between the article and the pads, so that there will be no contact until softening .of

the glass allows the moil to drcop; but this clearance is made so slight that the jaws will act as a guide and prevent the movement of the moil out of axial alignment to any material extent.

It is obvious that* changes could be made in the form of the chucks and in their operating mechanism, also that the intensity of the flame from the annular burner might be governed by partially closing the fuel` supply instead of by'shutting-off the oxygen supply, and also that, other combinations of gases might be used, and one source of gas intermittently varied as desired.

Other changes may be made within. the

scope of the appended claims without departing from the spirit of the invention.

What I claimvisz-` i 1. In apparatus for severing glass articles, a holder adapted to support an article from one end, a guide adapted to be positioned in close proximity to but normally out of engagement therewith outside of the other end of the article, and a burner adapted to apply a melting flame across the glass between the holder and guide.

2. In apparatus for severing glass articles having forms of rotation, a holder adapted to support such an article from one end, a guide adapted to surround the ,other end of the article in close proximity theret to but normally lout of engagement therewith, a burner adapted to impinge a plurality of yflame .points upon the glass at equal distances about its circumference between the guide and holder, and means to produce relative rotation 4between the burner and the holder for the article.

3. InV apparatus for severing glass articles having forms of rotation, a holder adapted to support such an article from one' end, a guide adapted to surround the other end of the article in close proximity thereto but normally out of engagement therewith, a burner adapted to inipinge a plurality of flame points upon the glass at equal distances about its circumference between the guide and \holder, and means to rotate the holder and guide at equal speeds about the axis of' the article.

4. In apparatus for severing glass articles, a holder adapted to support an article entirely by one end at an angle to the vertical, a guide for the other end of the article, and a burner adapted to apply a melting flame across the article between the guide and holder.

5. In apparatus for severing glass articles having forms of rotation, a rotary` chuck adapted to hold such an article bv one end with its axis horizontal, a burner hol/der and an annular burner, there beine; an arcuate groove in the upper side of said vhelder into which the burner may be slipped from above and which will hold the burner in alignment with the chuck. 1

i. In apparatus for severing glass articles having forms of rotation, a chuck adapted to. hold one end of such an article. a burner adapted to vapply a plurality of flames along a line around an article in the chuck,l means to cause relative rotation of the chuck and burner about the axis of the article, and means to prevent relative movement of the chuckl and burner longitudinally of the axis of the article.

8. In apparatus for severing glass articles having forms of rotation, a chuck. .adapted to hold one endy of such an article, a burner adapted to apply a'plurality of flames along a line around an article in the' chuck, means to cause relative rotation of the chuck and burner about theaxis of the article, means to prevent relative movement of the chuck and burner longitudinally of the axis of the article, anda chuck adapted to hold the other end of the article and mov# able longitudinally of said axis.

9. In apparatus for severing the moil from glassware, a sleeve' 'carrying a chuck adapted to receive a glass article, a bearing ticleby one end with its axis horizontal, a y

adapted to melt the moil off of the article, a mechanical chuck, means to close the mechanical chuck about the moil attached to an article in the vacuum chuik, and means to move the mechanical chuck to remove the moil after severance.

11. In glass-severing apparatus, a rotary vacuum chuck adapted to hold a glass arrotary mechanical chuckvwith its axis in line with that of the vacuum chuck, means to rotate the chucks .inunison, and a burner adapted to melt off a glass article between the chucks. /l

12. In glass-severing apparatus, a rotary vacuum chuck adapted'to hold a glass article by one end, a rotary mechanical chuck with its axis in line with that of the Vacuum chuck and having heat-insulating pads on its glass contacting surfaces, means to ,rotate the chucks in unison, a burner adapted to melt off a glass article between the chucks, and means to -heat the vacuum chuck.

13. A chuck comprising a sleeve, jaws pivoted to the sleeve, a rod extending through the sleeve and having one end connected to the jaws .whereby reciprocation of the rod within the sleeve opens and closes the jaws, a collar on the opposite end of thesleeve, spaced stops in position to be contacted by said collar, means t-o reciprocate said sleeve, and friction means yieldingly resisting movement of the rod with respect to t-he sleeve.

14. In combination, a bench plate having i two aligned'slots, a bearing block guided in each slot, rotary chucks for-the two ends of an article, the chucks being controlled by said bearing blocks, a burner in'position to apply a flame to an article in the chucks, and means beneath said plate for reciprocating said bearing blocks, rotating said f valve when the pipe bearing is moved towards the sleeve bearing.

16.7 In apparatus for severing glass articles, an article holder, a burner in position to apply a flame t0 an article in the holder, a source of supply of fuel gas to the burner, a source of supply of oxygen to the burner, and automatic means to cut off the supply of oxygen at predetermined intervals. 'y

17. The process of burning off glass articles, which consists in applying to the glass along a line of desired severance a flame suHiciently intense to melt the glass and produce a severed edge along said line and, after said edge is produced, applying thereto a less intense flame to fire-finish the same. i

18. The process of burning off glass articles,VV which consists in applying to the glass along a line of desired severance, a gas and oxygen flame of .sufficient intensity to melt the glass and produce a severed edge along said line and, after' said edge is produced, applying thereto a less intense 'flame of gas and air to fire-finish the same.

In testimony whereof I have hereunto subscribed my name to vthis specification.

ALVAH C. PARKER. 

